Make sure the name parameter of --workspace can be found in a package.json :s name field: This error can be caused by several things. If the filesconfiguration is missing (or badly set), then your typescript files can be built twice resulting in junk files in your packages src-folders. In my reference template, I provide an example that uses an Express.js server. While I mentioned in the beginning of the article that I am relatively happy with the current state of my reference TypeScript monorepo template, I still think there are a couple of things that can be improved. It doesnt run it on packages that dont implement it, like the validation package, which isnt a startable package, so it doesnt need that script. pnpm. Note though that when enabling this option you will need to ensure that TypeScript files are recompiled when they are changed (e.g. When installing the Prettier and ESLint extensions for VSCode, formatting and linting will also work within VSCode for any files in the monorepo. Then, the validation library in the backend does the same thing: it rejects the invalid to-do item. By declaring these in one central folder, dependencies do not need to be downloaded multiple times. miss it! Each local package has its own configuration, such as, Each package will be placed in a subfolder inside the folder, The monorepo config will be stored in the root (i.e. While the monorepo templates generated on the Goldstack site have already been downloaded hundreds of times, there has so far been not much engagement on GitHub. We also saw how we can share code between our apps. This is accompanied by scripts written in TypeScript that will deploy the lambda using the AWS CLI (templateLambdaExpressDeploy.ts): This allows standing up infrastructure and deploying using simple commands such as (see Infrastructure Commands and Deployment in the Goldstack documentation): Deployments are configured in goldstack.json configuration files that are transformed into Terraform variables for standing up infrastructure and picked up by deployment scripts as required. Again, the --stream flag produces streaming interleaved output from each of the sub-scripts. The compile-time validation helps prevent programming mistakes it gives us some protection from ourselves. Look in the example code repository under fullstack/backend/test/backend.http for a VS Code REST Client script, which allows you to trigger the REST API with an invalid to-do item. I prefer this to the default option, which shows the output from each script separately, but sometimes it collapses the output, which can cause us to miss important information. Theres no doubt that frontends are getting more complex. Instead of guessing why problems happen, you can aggregate and report on what state your application was in when an issue occurred. Chiefly I think that Yarn 2 ('Berry') is still not as mature as I would like it to be. TypeScript project references have chiefly been developed to help address the problem of long compilation times in large TypeScript projects. Okay so attempt #1 didn't quite work, but all the package managers have a feature called Workspaces, which npm describes like this: [Workspaces] provides support to managing multiple packages from your local files system from within a singular top-level, root package. In that case, one can configure Prettier and ESLint to only run for specific packages in a monorepo, by adding script definitions in package.json of a local package that can reference the Prettier and ESLint configuration in the root of the project. b) If youve chosen to use the name of the package (as stated in the packages package.json), make sure you copy it perfectly (including the slash). To make this easier, I even created a little website, Goldstack, that generates modular starter projects. Rather than having to maintain this list manually in the [next.config.js](https://github.com/goldstack/goldstack/blob/master/workspaces/templates/packages/app-nextjs-bootstrap/next.config.js), we can easily write a little script that reads out the package's package.json and determine the local dependencies using the Yarn cli. You don't want to Its multipackage because we have one or more packages in the repo. This blog post comes with working code that you can try out for yourself on GitHub. Insights for developing lean applications with ease and my musings on life and leadership . Have you ever worked on a project where each app that was a part of it was in a different repository? Note that if you want to have any shared React components, you will need to add React as a dependency to this project. Chiefly, using this approach will conflict with any packages that depend on reading files directly from their node_modules folder. tsc will build in the order listed, so this means you have to have some knowledge around dependencies between packages. One can simply define a .prettierrc file in the root of the monorepo and run Prettier using that configuration file. You can see the end result under the basic directory in the example code. Otherwise Prettier and ESLint will get in each other's way and make for a poor editing experience. Please tell me if Im missing something! With pnpm installed, we can create a new Node project like so. However, for larger projects, code editors like VSCode may run into performance problems. I will endavour to make this easier in the future and hope that this will encourage more contributions to the project. Only additional configuration we need to provide is to use the plugin [@yarnpkg/esbuild-plugin-pnp](https://github.com/yarnpkg/berry/tree/master/packages/esbuild-plugin-pnp) so that esbuild can resolve external dependencies from the local Yarn cache. A: So the workspace setup seems OK, but the submitted name of the workspace isnt found. Adopting tools that support me and avoiding tools that hinder me is a key part of being a rapid developer, and is a key theme in my new book, Rapid Fullstack Development. Thankfully it can be configured as easy as Prettier for a monorepo. What were doing here is telling pnpm that well have three projects that it needs to keep track of. LogRocket works perfectly with any app, regardless of framework, and has plugins to log additional context from Redux, Vuex, and @ngrx/store. Yes, there is one. And while this is not a new concept, modern tooling makes it easy to get one setup. Featured Image Credit: Pete Linforth from Pixabay. When working with TypeScript, we often need to build our code. The files section is missing in tsconfig.json . Thats a lot of wasted disk space when many of your projects will share dependencies. In the client app, open up the App.tsx file and update it with the following code. Read this link). Try entering some text and click Add todo item to add items to your to-do list. We can add package B to our monorepo in the same way as package A. Likewise it is easy to use esbuild. For a complete example app that includes shared React components and Turbrepo, you can check out my monorepo example repository on my GitHub at vite-pnpm-turbo-monorepo. Lets start with our admin app. Prettier works quite well for a monorepo. pnpm is much faster than npm. If that is the case, also enable the option disableSourceOfProjectReferenceRedirect which will prevent the code editor from constantly recompiling dependent modules. esbuild supports TypeScript by default and will automatically resolve all local references since we have TypeScript project references configured. A great place to add core dependencies is here. Follow me on Twitter for more content like this! As you add new JavaScript libraries and other dependencies to your app, youll need more visibility to ensure your users dont run into unknown issues. For this example, well be creating two React apps with Vite for our Admin and Client, and then having a shared project they both use code from. It will automatically apply to all packages in the monorepo. Lets move on and examine the more advanced full-stack monorepo. For this, we need to configure the plugin next-transpile-modules. The full-stack TypeScript project contains another good example of running a script on all sub-packages. Now there are many examples where this file extends an already existing tsconfig.json . Another remaining limitation is the need to run the utils-typescript-references tool manually after changing the dependencies between local packages (to keep workspace dependencies and TypeScript project references in sync). Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Pulumi is also a great option but I am not yet convinced that the additional magic it provides on top of basic infrastructure definition (which is based on Terraform) is required over vanialla Terraform. rootDir , outDir and composite settings must be specified. Being forced to publish a package in order to reuse it conveniently makes for a painful workflow, especially if you are only reusing the package within a single monorepo. ESM modules that are not yet supported in Yarn 2, long compilation times in large TypeScript projects. The React use hook would let use resolve promises within our React components and hooks, including on the client. The TypeScript project also shares a validation library between the frontend and the backend projects. Bit uses pnpm under the hood but automates a lot of the things that are currently done manually in a traditional workspace managed by pnpm/npm/Yarn. You should see an alert with the text Hello, Client User! The ui-shared is made in the likes of but my package is of course much bigger. The most 'serverless' way to deploy a backend using functions would be to use different functions for different endpoints. You can review all the needed changes from the initial to final commit here. Q: I cannot run npm install axios --workspace=@suzieq/apple. To use bundling tools for your deployments is critical in a monorepo. Solution 1:Begin with deleting all files in node_modules\@suzieq . Add the following lines to your new package.json file. How fast? Thanks for reading, I hope you have some fun with pnpm. Sign up for our free weekly newsletter. Now lets create our root project. A good start to troubleshoot this is to set files to [] . For instance for deploying a lambda function, one can simply define a number of Terraform files (e.g. npm will optimizations in node_modules where it removes the scope name from the directory name. Thankfully it can be configured as easy as Prettier for a monorepo. Just open ./src/index.ts and add this, and youre good to go. Usage Workspace. So, at the root of our workspace, we can simply invoke this command to start both our backend and frontend in development mode: Its also useful sometimes to be able to run one script on a particular sub-package. Drawer Apparently, according to the benchmark, its 3x faster. There's an article about bit install that talks about it: Painless Monorepo Dependency Management with Bit. ["@myproject/package1", "@myproject/package2"]. In section 5, well talk about the magic that makes it possible to share these packages without publishing them. Our next step is to actually configure our frontends. We need to add a reference to our shared project and update our project names. To start a npm command for all packages, just add -ws : If youve ended up in a position where nothing seems to help, repair the setup by doing these steps: Restart vscode :) Also, make sure the outDir setting tsconfig.json matches the main setting in package.json. When using Yarn workspaces, it is easy to infer what the local references should be, however, TypeScript does not do so by default. The p in pnpm stands for performant and wow, it really does deliver performance! Our project should now have a package.json for us to use. To demonstrate dependencies within the monorepo: Lets learn how to create this structure for our project. Next, create a ./package.json with the following content: Make sure the section workspaces is present, npm is dependent on this. The main issue remaing with respect to TypeScript project references is that these need to manually maintained. AWS Lambda is well suited to deploy backend application code from a monorepo. will break the template before long so there will definitely be some ongoing work to keep this template working. Do not run npm install in the package directory. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. You can see in the backend code how it uses the validation package to reject invalid to-do items: One thing that makes pnpm so useful for managing a multipackage monorepo is that you can use it to run scripts recursively in nested packages. The one change we do have to make is in each projects package.json. Let me break it down. Add this line to your package.json: The updated package.json file looks like this: Now that we have linked our root package to the sub-package A, we can use the code from package A in our root package: Note how we referenced package A. It can be frustrating and time-consuming to deal with. There are many ways to develop, deploy and test Node.js lambda functions. The frontend and backend packages do implement start:dev, so when you run this command they will both be started. Are you sure you want to create this branch? This simply causes pnpm to continuously display the full and interleaved output of the scripts for each package in your terminal. Each piece (read: local package) of the product will have its own folder with its own package.json , tsconfig.json but use the monorepo's node_modules. Lets now create the packages directory and a subdirectory for package A: Now we can create the package.json file for package A: Well create a simple code file for package a with an exported function, something that we can call from the root package: Next, update the package.json for the root package to add the dependency on package A. pnpm is an alternative to npm and yarn. At this point each local package will have: We can use a loophole in the module resolution in TypeScript/JavaScript works. If you dont already have Node.js, please follow the instructions on their webpage. Go ahead and run $ pnpm add -D typescript @types/node Next, create a new file called pnpm-workspace.yaml. This is how I have mine setup and it works well for my projects. The difference, though, is that the TypeScript project also has type definitions. They allow breaking up a large project into multiple smaller modules that can each be compiled individually. Similar to Jest, it is very easy to use Webpack in a monorepo configured to use TypeScript project references. In TypeScript, named constants can be created by using an enum or with a union of string literal types. Trying to add an empty to-do item to the list shows an alert in the browser; the validation library in the frontend has prevented you from adding an invalid to-do item. Unfortunately, running tests in Jest is often more difficult than one wishes it to be due to the somewhat fragmented nature of the JavaScript ecosystem. Ashley Davis is a software craftsman and author. This works just fine, but for the sake of simplicity, that feature isnt used here. Support npm,yarn, pnpm, lerna, rush. This is convenient because the backend and frontend will often be tightly coupled and should change together. As an example, heres the package.json from the backend showing its dependency on the validation package: The frontend uses the validation package to verify that the new to-do item is valid before sending it to the backend: The backend also makes use of the validation package. I've written a couple of posts about how to set up JavaScript and TypeScript Monorepos over the past three years (#1, #2, #3, #4, #5, #6, #7), and I kind of thought I had it all figured out - but I didn't. In order to develop code for a Lambda function, there are two things to consider: bundling and local testing. In this example, we can build all TypeScript projects (we have three separate TS projects!) Either devDependencies or dependencies is broken. New JavaScript and Web Development content every day. Update TypeScript Project References for Yarn Workspaces magically!
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